When CBT Sessions Stall: Four Signs It's Ambivalence, Not Technique
Before refining your CBT technique, check for the client's ambivalence signals. Four in-session markers from Westra & Norouzian (2018) and a 5-step switch to MI.

Key takeaway
When CBT sessions repeatedly stall, the problem may lie in ambivalence rather than technique. Westra and Norouzian (2018) show that four markers—topic shifts, "yes-but" responses, increasing silence, and elaborate homework excuses—signal in-session ambivalence. Resistance varies with the clinician's response rather than being a fixed client trait, and integrating Motivational Interviewing (MI) into CBT significantly improved long-term outcomes. Recognizing these markers and briefly switching to MI mode can get a stuck session moving again.
When a Good Intervention Stalls, Listen for Ambivalence
You've delivered a solid cognitive behavioral therapy (CBT) intervention. The client understood it, you agreed on a between-session assignment together—and yet, at the next session, they're back in the same place. "This week was kind of hard," they say, and the homework is undone.
When this pattern repeats, our instinct as clinicians is usually to refine the technique: explain more clearly, structure the task more concretely, sharpen the rationale. But research by Westra and Norouzian (2018) points somewhere else entirely. This situation isn't client resistance or a lack of motivation—it's a set of moment-to-moment markers of ambivalence surfacing inside the session. And how we respond to those markers shapes the long-term outcome of treatment. This article looks at how to recognize ambivalence markers in CBT and how to make a deliberate, temporary switch to Motivational Interviewing (MI).
Why Even Good Technique Gets Stuck — The Mechanics of Ambivalence
Ambivalence about change is not pathological. Change means gaining something new while also losing something familiar. When a client stops an anxiety-avoidance behavior, the anxiety eases—but so does the sense of safety that behavior provided.
When this ambivalence goes unexplored and skills training begins anyway, the client can learn the technique while never fully moving toward change. On the surface they agree; internally, sustain talk keeps running. This is not a feature of the client's personality. It's a natural part of the change process.
What Westra & Norouzian (2018) Found — Resistance Is Not a Client Trait
| Finding | Scope / Method | Key takeaway |
|---|---|---|
| Westra & Norouzian (2018) | Synthesis of resistance-process research within CBT | Resistance is an in-session interactional marker, not a client trait |
| CBT+MI RCT outcomes | Generalized anxiety disorder, long-term follow-up | CBT+MI significantly outperformed CBT alone on long-term outcomes |
| Effect over time | Same research, follow-up observation | The advantage did not fade with time—it grew |
Their work yields two central findings.
First, the "resistance" that shows up in a CBT session is not a fixed client characteristic but a moment-to-moment interactional marker. The same client displays a great deal of resistant behavior with one clinician and very little with another.
Second, in a randomized controlled trial (RCT) for generalized anxiety disorder, the group that integrated MI into CBT achieved significantly better long-term outcomes than CBT alone—and the advantage didn't shrink over time; it widened. In other words, clients whose ambivalence was adequately addressed continued to sustain change on their own after termination.
Four In-Session Markers of Ambivalence to Watch For
Westra and Norouzian (2018) describe four ambivalence markers that appear inside CBT sessions.
| Marker | How it looks in session | What it signals |
|---|---|---|
| Topic shift | Abruptly moving to a different subject | A pull away from the current focus |
| "Yes-but" response | "Yes, but..."—agreement that's actually refusal | Surface assent, internal sustain talk |
| Increasing silence | Longer-than-usual pauses, one-word answers | Withdrawal from engagement, reduced connection |
| Homework excuses | Detailed, lengthy explanations; varied reasons | Ambivalence about the task itself |
If a marker appears two or more times in a single session, stop pushing the technique. Switch to MI mode for a moment.
Switching from CBT to MI — A Five-Step Practice
1. Notice the marker — recognize, don't judge
When a marker appears, the first move isn't judgment. It's recognition.
An internal note—"Ah, the client seems to be drifting away from this topic"—is where the switch begins. Without that recognition, continuing to push the technique only amplifies the ambivalence.
2. Pause — set the technique down
Once you've noticed the marker, gently set aside the skills work in progress.
"Can I pause for a second? As I'm listening, something feels like it got a little heavier just now—does that fit?"
That single sentence shifts the center of gravity from technique to relationship.
3. Acknowledge the ambivalence — hear both voices
Apply MI's core skill of exploring ambivalence.
"There's probably something good about changing, and something good about staying as you are right now. Could we look at both together?"
The heart of exploring ambivalence is examining sustain talk—the reasons for staying put—without punishing it. Sustain talk isn't resistance; it's an expression of how complicated change is within a real human life.
4. Reflect change talk — don't let it slip by
The moment a client speaks about reasons, willingness, or ability to change—that's change talk. Don't let the moment pass; reflect it back.
"A second ago you said, 'I do still want to get better.' How long has that feeling been there?"
Drawing out and exploring change talk is one of the most powerful skills in Motivational Interviewing.
5. Return to technique — when the client is ready
When ambivalence has been explored sufficiently, the client begins to lean toward change on their own. Returning to skills work at this point often brings a level of engagement you didn't see before.
"So—could we try just one thing in that direction today?"
CBT and MI Aren't Competitors — They're Integrated
CBT and MI rest on different theoretical foundations, but in actual clinical practice they work complementarily.
| Situation | Better-fit mode |
|---|---|
| Client is ready to learn a technique | CBT skills work |
| Ambivalence markers appear | Switch to MI mode |
| Motivation and direction are clear | Return to CBT |
| Early in treatment, readiness uncertain | Lead with MI |
You can move fluidly between CBT and MI even within a single session. This is precisely the form of integration Westra and Norouzian (2018) demonstrated.
What a Stuck Session Needs May Not Be Better Technique
Westra and Norouzian's (2018) findings carry an important message for CBT clinicians. When a session stalls, refining the technique may not be the answer. What's needed may be a single sentence that acknowledges the client's ambivalence in this very moment.
When you see the four markers—topic shift, yes-but, increasing silence, homework excuses—pause. And try saying something like: "It feels like this got a little heavier just now—does that fit?" That one sentence can be the start of getting a stuck session moving again.
References
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Frequently asked questions
How do I tell ambivalence apart from genuine client resistance?
Westra and Norouzian (2018) reframe "resistance" itself as a moment-to-moment interactional marker rather than a fixed client trait—the same client shows more of it with one clinician and less with another. Practically, look for the four in-session markers (topic shifts, "yes-but" responses, increasing silence, elaborate homework excuses). When they cluster, treat them as ambivalence to be explored, not opposition to be overcome.
When during a session should I switch from CBT to MI?
A useful threshold is when an ambivalence marker appears two or more times in a single session. Rather than pushing the technique harder, pause, name what you're noticing, and explore both sides of the client's ambivalence. Once change talk emerges and the client leans toward change, you can return to skills work—often with noticeably stronger engagement.
Does integrating MI into CBT actually improve outcomes?
In a randomized controlled trial for generalized anxiety disorder, integrating MI into CBT produced significantly better long-term outcomes than CBT alone, and the advantage grew rather than faded over follow-up—suggesting clients continued to sustain change after termination (Westra & Norouzian, 2018).
This article was written and reviewed using Modalia AI's clinical guidelines, with professional human review before publication.
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